Home Postcode finder QLD Linthorpe Linthorpe postcode QLD Linthorpe is a locality in Queensland covered by postcode 4356. Postcode 4356 State or territory Queensland (QLD) Region Toowoomba Region Add a free Linthorpe business listing Be the first listing in Linthorpe Common questionsWhat is the postcode for Linthorpe?Linthorpe, QLD has the postcode 4356.What state is Linthorpe in?Linthorpe is in Queensland (QLD).Does postcode 4356 cover more than one suburb?Yes. Postcode 4356 covers 18 localities, so the postcode alone does not identify Linthorpe. Browse other postcodes in Queensland, or widen the search to every Australian postcode.